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Updated: Mar 7, 2026

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Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
11.7K
[Canaloplasty ab interno - a Minimally Invasive Alternative]
1Augencentrum Köln.
Summary
Canaloplasty ab interno (ABIC) effectively lowers intraocular pressure (IOP) in open-angle glaucoma patients. This minimally invasive technique reduces medication dependence, showing results comparable to traditional methods.
Area of Science:
- Ophthalmology
- Glaucoma Surgery
- Minimally Invasive Procedures
Background:
- Open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
- Effective IOP management is crucial to prevent glaucomatous optic neuropathy.
- Current surgical options aim to improve aqueous humor outflow.
Purpose of the Study:
- To evaluate the technique and efficacy of canaloplasty ab interno (ABIC) for POAG treatment.
- To assess the impact of ABIC on intraocular pressure (IOP) and medication requirements.
- To compare ABIC outcomes with established canaloplasty procedures.
Main Methods:
- A monocentric series of consecutive cases involving patients with POAG undergoing combined cataract and ABIC surgery.
- Utilized the iTrack™ 250µ-microcatheter for circumferential dilation of Schlemm's canal.
- Primary endpoints included mean IOP measurements at 1, 3, 6, 9, and 12 months post-surgery.
Main Results:
- Mean IOP significantly reduced from 18.8 mmHg preoperatively to 14.7 mmHg at 12 months post-surgery.
- Average medication use decreased from 1.69 to 0.21 post-procedure.
- The primary complication observed was localized descemetolysis near the limbus.
Conclusions:
- ABIC demonstrates efficacy in reducing IOP for patients with POAG.
- The procedure leads to a significant decrease in glaucoma medication dependence.
- ABIC offers comparable outcomes to ab externo canaloplasty with a favorable safety profile.

